This is a late dusk shot in the shadow of a Green Heron as he tries to swallow a rather large meal.
The water drop hanging off the tip of its beak is a plus to the scene.

Canon 7D with a 500L f4 lens handheld @ 1/400, f4, ISO 640, +2 exposure compensation.

Cropped for composition purposes.

More than usual saturation and vibrance added because of the dull light, slight blur to upper background to kill the noise after selective sharpening on the parts of the bird in focus and the frog.

A couple of small unwanted spots clonned away in the water.
The low light level also gave me a restricted depth of field which in this case is fortunate - the legs of the bird are out of focus, giving more emphasis on the main action.

My settings reflect the absence of good light. I was originally stationary on a tripod but was ready to leave when the heron caught it's meal and had to go handheld - which I prefer anyway.

So, it was either take the time to reposition the camera on the tripod and lose the moment or go for it handheld snd risk motion blur to the poor light.

Cheers,

Mike